Event attachments - attach a Google document, spreadsheet or presentation to your event or upload a file from your computer.
Event flair - bring life to your calendar and organise your events with icons for things like anniversaries or meetings.
Hide morning and night - minimise a range of times in the morning and at night so you see only the title of events during those hours.
Free or busy - see which of your colleagues are free or busy right now.
Jump to date - allows you to quickly navigate to future dates, or past ones.
Smart rescheduler - see when each event invitee is free, great if you need to reschedule a meeting.
World clock - keep track of the time around the world. When you click an event, you'll see the start time in each time zone as well.